Rifaxa tablet 550mg

About Rifaxa tablet 550mg

Rifaxa Tablet 550mg Uses

• Reduces the risk of recurrent episodes of overt hepatic encephalopathy in adults with chronic liver disease
• Used long term to maintain remission after an episode of hepatic encephalopathy has been treated
• Prescribed alongside lactulose in patients who continue to have symptoms despite lactulose therapy alone
• Sometimes used off label for irritable bowel syndrome with diarrhea at this higher strength
• May be used short term for gut bacterial overgrowth conditions under specialist supervision

Rifaxa Tablet 550mg Benefits

• Acts locally in the gut with minimal absorption into the bloodstream, lowering systemic side effects
• Lowers ammonia producing bacteria in the intestine, easing confusion and drowsiness linked to liver disease
• Reduces hospital admissions caused by repeated hepatic encephalopathy flare ups
• Well tolerated for long term daily use compared to older ammonia lowering antibiotics
• Does not require frequent dose adjustment in most stable liver disease patients

What Experts Say

Hepatologists prescribe Rifaxa Tablet 550mg for long term prevention of hepatic encephalopathy, a distinct indication from the lower 200mg strength used for traveler's diarrhea. The higher dose sustains adequate gut level concentration across a twice daily schedule, needed to consistently suppress ammonia producing bacteria in patients with advanced liver disease.

Chronic liver disease remains a major health burden in Pakistan, largely driven by untreated viral hepatitis B and C, and many such patients eventually develop hepatic encephalopathy episodes that bring confusion and reduced alertness. Physicians view rifaximin as a valuable add on once lactulose alone fails to control these episodes, since it targets intestinal bacteria without significant systemic absorption.

Experts generally recommend continuing this tablet indefinitely once a patient recovers from an overt hepatic encephalopathy episode, since stopping therapy raises relapse risk. Regular liver function monitoring alongside lactulose dosing helps physicians get the most benefit from this combination approach.

Drug Class

• Antibiotic
• Nonabsorbable Rifamycin Derivative

Rifaxa tablet 550mg formula

• Rifaximin

Available forms

• Tablet

How to use Rifaxa tablet 550mg?

• Take Rifaxa Tablet 550mg by mouth, with or without food, as prescribed by your doctor
• The usual adult dose for hepatic encephalopathy is one tablet twice daily
• Swallow the tablet whole with a glass of water, do not crush or chew it
• Continue taking it regularly, even if you feel well, unless your doctor advises otherwise
• Do not stop treatment suddenly without consulting your doctor, since this can raise the risk of relapse
• If you miss a dose, take it as soon as you remember, but skip it if the next dose is almost due

Drug Interactions

• Warfarin: May increase INR and bleeding risk, requiring closer monitoring in patients using both medicines together
• Cyclosporine: Significantly raises rifaximin blood levels since cyclosporine blocks the transporter that normally limits its absorption
• Other Transport Protein Inhibitors: Can increase the amount of rifaximin absorbed into the bloodstream, raising the chance of side effects
• Lactulose: Often used together for hepatic encephalopathy with no harmful interaction, though spacing doses may help gut tolerance

Risks and warnings

• Liver Disease Severity: Use with caution in patients with severe liver impairment since absorption may increase beyond expected levels
• Clostridioides Difficile Risk: Report persistent or worsening diarrhea promptly since antibiotic associated colitis can occur even with a nonabsorbable drug
• Pregnancy: Use only if clearly needed and after discussing risks and benefits with a doctor, since safety data in pregnancy is limited
• Breastfeeding: Consult a doctor before use since minimal data exists on transfer into breast milk
• Bacterial Resistance: Avoid use for infections outside the approved indications to reduce the risk of resistant bacteria developing
• Renal Impairment: Use cautiously in patients with reduced kidney function alongside liver disease due to limited safety data

Rifaxa Tablet 550mg Side Effects

• Nausea
• Headache
• Dizziness
• Fatigue
• Abdominal pain
• Flatulence
• Swelling in the legs or ankles (peripheral edema)
• Muscle spasms
• Itching or skin rash
• Low mood or anxiety
• Worsening of fluid buildup in the abdomen (ascites)
• Rare risk of Clostridioides difficile associated diarrhea
• Rare allergic reaction with swelling of the face or throat

Storage Conditions

• Store below 30 degrees Celsius in a cool, dry place away from direct sunlight
• Keep the tablets in their original blister pack until ready to use
• Keep out of reach of children
• Do not store in the bathroom or near a sink where moisture can damage the tablets
• Dispose of any expired or unused tablets safely, do not flush them down the drain